Home / 1,275,875.10-1,913,812.65-771,990.30

Finding the Fourth Proportional to 1,275,875.10, 1,913,812.65 and 771,990.30

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Solution

The fourth proportional to 1,275,875.10, 1,913,812.65 and 771,990.30 is: 1,157,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,875.10 : 1,913,812.65 = 771,990.30 : x
  2. Step 2: Convert to fraction form
    1,275,875.10/1,913,812.65 = 771,990.30/x
  3. Step 3: Cross multiply
    1,275,875.10x = 1,913,812.65 × 771,990.30
  4. Step 4: Simplify right side
    1,275,875.10x = 1,477,444,801,817.30
  5. Step 5: Solve for x
    x = 1,477,444,801,817.30/1,275,875.10
  6. Step 6: Final answer
    x = 1,157,985.45

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.